Questions tagged [verification]

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Make Postfix add “Authentication-Results” header to locally originated mail destined to local domain?

If I write via sendmail or SubmissionS client a mail to my virtual account (my domain is example.org), the mail I receive looks like this: Return-Path: <user@example.org> Delivered-To: user@...
-1
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1answer
53 views

How is it possible for spammers to keep pestering me with FAKE domains when all e-mail sending providers have these insane obstacles to go through?

I keep getting e-mails to my Gmail account from made-up domains such as: @mtixusu9shbyusyr6.org.uk @mpqyriexqpvramtkn.org.uk And so on... (Yes, I checked some of them and they are not actually ...
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0answers
39 views

Certificate validation with non-standard CA

I have a Certificate which has been issued by a non-standard CA over which I have no control. I generated the CSR, sent it to non-standard CA and it returned a valid Certificate. This Certificate is ...
-1
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1answer
225 views

Disable or override GSuite “Verify its you” function

Theres a weird issue I can't find any solution for: in an organization that is using GSuite admin can't open a mailbox for a fired employee. I mean we can reset password etc but while logging in there'...
0
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1answer
103 views

Nginx reverse dns with cloudflare

https://www.nginx.com/resources/wiki/modules/rdns/ https://github.com/flant/nginx-http-rdns How do you get the nginx-http-rdns module to work with cloudflare free DDoS protection? I wish to use this ...
0
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0answers
68 views

Use Signature verification Certificate for ADFS SSO in .net 4.5 application

We are developing and hosting a .net application that is required by our client to use SSO with ADFS. The application is claims-aware and we have configured it to use the ADFS server provided by the ...
1
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0answers
222 views

Google Restricted Scopes OAuth verification: project-id does not match

I received the following email from Google a few days ago: Hi Google API Developer, We sent this email because you’re listed as a contact on the following Google Cloud Project(s) using OAuth 2.0 to ...
0
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1answer
91 views

NGINX Calling page will download strange file + Certbot can't install certificate

Problem: Certbot returns a urn:ietf:params:acme:error:connection-error when trying to install a certificate for subdomain rainloop.example.com. EDIT: As to be seen in the "EDIT" segment below there'...
4
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1answer
744 views

SSL client certification

OS: CentOS 7 SW: NginX Existing stuff dhparam.pem mydomain.com.crt mydomain.com.csr mydomain.com.key Issue: I'm trying to create a client verification by creating client certificates and then ...
4
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2answers
3k views

How to verify signature on a file using OpenSSL with custom engine

Update Dec 28, 2017 – 3: The author of OpenSSL DSTU module kindly provided patch to OpenSSL+DSTU implementation with a fix for the issue, and assisted further. I was able to accomplish what I need ...
3
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0answers
21k views

The revocation function was unable to check revocation because the revocation server was offline

I have a chain of certificates: MYROOTCERT -> MYCHILDCERT. The MYCHILDCERT certificate has a CRL distribution point extension: [1]CRL Distribution Point Distribution Point Name: Full ...
4
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1answer
1k views

Let's Encrypt: Why is DNS challenge static? [closed]

To my understanding, LetsEncrypt DNS verification works by setting a static TXT record into DNS (basically just a nonce) which is then checked by the LetsEncrypt servers. When I first heard about it ...
0
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2answers
217 views

DNS Verification using TXT not working

I have followed the instructions for setting the TXT record for chemicalkinetics.info (registered through siteground). After waiting several days, I still cannot get verification. My only guess has ...
0
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1answer
2k views

Can't connect to ssh due to host verification failed

I have an issue with connecting to my ssh hosts. I keep getting this message in verbose mode: OpenSSH_7.2p2, LibreSSL 2.4.1 debug1: Reading configuration data /Users/me/.ssh/config debug1: /Users/me/...
3
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0answers
3k views

Mailgun emails are rejected everywhere but on Gmail

My problem and Mailgun logs I've "setup and verified" (see context) my sending domain with Mailgun, so I could use it to deliver my contact/order forms via Mailgun API: https://github.com/...
2
votes
1answer
9k views

550 Verification failed Sender verify failed (in reply to RCPT TO command)

Note: email addresses, domains, and ip addresses have been changed to protect the innocent Current Error: Apr 28 23:47:32 vps01 postfix/smtp[8012]: 2A03D6285EF9: to=<brian@somedomain.com>, ...
2
votes
1answer
9k views

Enforcing client verification in Apache just for a specific client certificate

I want to make my Apache web server accept SSL connections ONLY IF the client presents itself with a specific SSL client certificate. In other words, only ONE client is allowed and it MUST use a ...
1
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4answers
690 views

Is it safe to use not ECC RAM for cold backup server?

I need home computer for simple backup task (just cronjob on Linux, it will run once per day): Download file from my production server (in datacenter, it's good server with Xeons & ECC RAM etc.) ...
0
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1answer
17k views

How to verify DFS replication for EVERY file?

Was wondering if there is a way to verify that every single file from the source server is replicated over to the secondary server. I understand there's a command Get-DfsrFileHash that can verify the ...
1
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0answers
312 views

Verify rdiff backup integrity

I am using rdiff for my differential backup. Recently an issue happened where all versions of my backup failed to patch correctly and rdiff returning an error 106 which after investigation is a code ...
1
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1answer
1k views

Google Authenticator - generate new set of emergency codes

I use Google Authenticator on my SSH servers with Andoid app for generating codes. After I run $ google-authenticator application create set of emergyncy keys: https://www.google.com/chart?chs=...
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1answer
533 views

postfix mail gateway recipient address verification for some domains

I want to do the recipient address verification for some domains, but many domains I want to exclude from verification. These are subdomains of domains that are being verified and MySQL lookups ...
1
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2answers
1k views

How Can You Tell If IPSec Is Installed on Cisco

How can I tell if my Cisco router has IPSec installed? I went into configuration mode to see about setting up a crypto policy, but the 'crypto' keyword isn't available. Is this an indication that it ...
1
vote
1answer
2k views

OpenDKIM - verifying mail forwarded by mailing lists

I'm using OpenDKIM for verifying signed mails that are incoming to my mail server and use it as a spam addon (if dkim is broken, mail lands in Junk). However, I'm getting lot of false-positives with ...
62
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10answers
136k views

How to avoid lftp Certificate verification error?

I'm trying to get my Pelican blog working. It uses lftp to transfer the actual blog to ones server, but I always get an error: mirror: Fatal error: Certificate verification: subjectAltName does not ...
1
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5answers
2k views

“System File Checker” (sfc-like) for Linux

I am trying to locate a tool, not unlike either the "sfc" command on Windows or the "sysck" command on AIX, which can verify that the file contents, ownerships and permissions are correct. The "...
0
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1answer
2k views

Best practices for mass file transfer with verification?

I'm looking for a bit of advice on transferring a several files from Windows-based workstations to a Linux Server running Ubuntu Server LTS 10.04. At the moment I've been mounting the shares on the ...
0
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1answer
827 views

Postfix connection cache / address verification probes

Is Postfix connection cache also applicable for address verification probes? My setup of 2 frontends with 1 backend sometimes runs into trouble under high load. Frontends verify recipients on the ...
1
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1answer
381 views

Check if an e-mail address exists before sending [closed]

Is there a mechanism for verifying an e-mail address exists before sending?
0
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1answer
4k views

How do I receive email sent to postmaster?

I have a VPS server that I would like to get an SSL certificate for, and the CA needs an email address to verify that I own the domain. The options are: postermaster@mydomain.com, hostmaster@mydomain....
7
votes
8answers
1k views

How do you verify a restore?

What tool(s) would you use to verify that a restored file structure is whole and complete? My environment is a Windows Server 2008 file server. (We use tape for backup, but that is inconsequential.) ...
0
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3answers
279 views

Why is Yahoo blocking our email address verifications and bouncing them back [duplicate]

I have a legitimate site www.angelescity.ph a Free Classifieds site, once someone posts an advert a verification email is sent.. Yahoo has been blocking them, not delivering and bouncing them back, ...
4
votes
3answers
329 views

Know (at a glance) your Mac client is up-to-date

We have over a thousand Mac clients, and occassionally issue changes that affect many or all of them (such as installing new software, creating local user accounts, or applying updates). I want to ...